余宗翰 @jeffyu1Follow BadgesProblem SolvingPythonDays of Code CertificationsCertificate: Problem Solving (Basic)VerifiedskillCertificate: Python (Basic)VerifiedskillCertificate: Python (Intermediate)VerifiedskillWork Experiencejeffyu1 has not updated employment details yet.Educationjeffyu1 has not updated education details yet.Linksjeffyu1 has not updated links details yet. Skillsjeffyu1 has not updated skills details yet.